How to convert JSON Array integer variable to string

Question

I am having issues parsing my integer values from JSON to String so I can add it to an array list.

I have tried using Integer.valueOf but I am a bit stuck on the formatting for this particular issue and whether Integer.valueOf will actually work or not.

This is the code I have that works so far

try {
    JSONArray jsonArray = new JSONArray(response);
    vehicleMakes = new String[jsonArray.length()];

    for (int i = 0; i < jsonArray.length(); i++) {
        String make = jsonArray.getJSONObject(i).get("make").toString();
        String model = jsonArray.getJSONObject(i).get("model").toString();
        String reg = jsonArray.getJSONObject(i).get("license_number").toString();
        // int year = jsonArray.getJSONObject(i).get("year").toString();

        Vehicle V = new Vehicle(make, model, reg);
        vehicleArrayList.add(V);
    }
}
catch (JSONException e) {
    e.printStackTrace();
}

I am trying to add integer variables with this, such as

int year = jsonArray.getJSONObject(i).get("year").toString();

How can I add this?

KillSwitch · Accepted Answer · 2019-03-28 11:42:49Z

1

I'm not sure what the library you use, but if it's org.json, you could try something like this:

int year = jsonArray.getJSONObject(i).getInt("year");

answered Mar 28, 2019 at 11:42

KillSwitch

1252 silver badges11 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Jack Branch · Accepted Answer · 2019-03-28 11:44:03Z

0

Take a closer look at this line:

int year = jsonArray.getJSONObject(i).get("year").toString();

Your trying to add an integer and a string, as java is a typed language this wont work and youll likely get a compile time error flagged by the compiler, to resolve this youve got a few options, my suggestion is this:

int result = Integer.parseInt(yourString) // good option, will account for ascii codes ang give you the correct value

// now convert to a string like so:

String.valueOf(result);

// so your code would be:

int year = Integer.parseInt(jsonArray.getJSONObject(i).get("year").toString());

answered Mar 28, 2019 at 11:44

Jack Branch

1628 bronze badges

Comments

Cray · Accepted Answer · 2019-03-28 11:45:24Z

0

You can convert String to int with

Integer.parseInt(string);
Integer.parseInt(jsonArray.getJSONObject(i).get("year").toString());

answered Mar 28, 2019 at 11:45

Cray

2,8468 gold badges25 silver badges34 bronze badges

Comments

Akshay Kumar S · Accepted Answer · 2019-03-28 12:17:08Z

0

int year = jsonArray.getJSONObject(i).getInt("year");
String strYear = String.valueOf(year);

Use this.

edited Mar 28, 2019 at 12:17

answered Mar 28, 2019 at 11:36

Akshay Kumar S

3333 silver badges13 bronze badges

Comments

Jitendra Patil · Accepted Answer · 2019-03-28 12:34:32Z

0

public static String[] toStringArray(JSONArray array) {
if(array==null)
    return null;

String[] arr=new String[array.length()];
for(int i=0; i<arr.length; i++) {
    arr[i]=array.optString(i);
}
return arr;
}

answered Mar 28, 2019 at 12:34

Jitendra Patil

131 silver badge7 bronze badges

Comments

careful · Accepted Answer · 2019-03-28 12:43:14Z

0

If compiler doesn't recognise this way, add org.json library.

Example:

String year = String.valueOf(jsonObject.getInt("year"));

or in your case:

String year = String.valueOf(jsonArray.getJSONObject(i).getInt("year"));

answered Mar 28, 2019 at 12:43

careful

6910 bronze badges

Collectives™ on Stack Overflow

How to convert JSON Array integer variable to string

6 Answers 6

Comments

Comments

Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

6 Answers 6

Comments

Comments

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related